BioChem - DOS

Biobutanol production from sugarcane bagasse hydrolysate generated with the assistance of gamma-valerolactone

Process biochemistry

Kong, X.; Xu, H.; Wu, H.; Wang, C.; He, A.; Ma, J.; Ren, X.; Jia, H.; Wei, C.; Jiang, M.; Ouyang, P.

Production of butanol from renewable resources is an attractive approach for introducing an economically competitive process. In the present study, sugarcane bagasse was hydrolyzed with the assistance of gamma-valerolactone (GVL). After phase separation, direct hydrolysis of sugarcane bagasse resulted in 24.08g/L total sugars. Removal of lignin significantly increased the total sugar concentration to 248.41g/L with a high yield of 0.87g/g. Due to the low level of inhibitors in hydrolysate, the obtained hydrolysate was used as substrate for biobutanol production. Batch fermentation with 41g/L sugars produced a high ABE concentration of 14.26g/L, including 4.1g/L acetone, 9.3g/L butanol and 0.86g/L ethanol. The fermentation with 61g/L sugars greatly inhibited cell growth and solvent production due to the high concentration of NaCl and GVL. This study demonstrates that sugarcane bagasse hydrolyzed in GVL/water solution could be an alternative substrate for the low-cost production of biobutanol.

2016

Elsevier Applied Science

1359-5113

51

10

pp.1538-1543

10.1016/j.procbio.2016.06.013

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART76285611

Butanol production; Gamma-valerolactone; Sugarcane bagasse; Lignin removal